I am not a fan of how they implemented the new swimming system... its harsh, unforgiving, and generally broken. Its something that players will have to experiment with in order to see if they can ever pull it off, and carries the likely possibility of instantaneous and unavoidable death as soon as players try to test their swimming skill. On top of that, it is designed to trap players that lag into the water, or worse lose their connection when moving in a direction towards it, and will STILL kill players who disconnect.
That, coupled with the new map that requires swimming to reach many areas, and the fact that there are no adequate in-game warnings ("dont swim unless you can handle it" is not a warning or a guideline, so much as a temptation) makes it a broken mechanic that imposes the ultimate punishment, and often has imposed this punishment just for playing while the server lags.
Beyond what I might suggest to the dev. team, I can't say what they should do, but it's presently a terrible system, and it needs to be changed soon. That, or they need to revise some core game mechanics, such as those that necessitate endless stat grinding, and those that allow you lose most of your game progress upon death.
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